Cummins ISX rebuild?

I don't think that Pete dealer knows what hes talking about... Why are you talking to a Pete dealer when u are in an international lol. FYI just cuz you are getting a Crate motor it's more then likely a reman.. you can have TONS of problems with that thing. There is lots of storys about them on a facebook group called Cummins ISX Problem Solvers. They have lots of good Guys in there that know all about the ISX and they rebuild them daily. Most can tell you all the storys you wanna hear from drivers ripping the engines part going down a hill hitting over 4200 RPM... To how bad the Liners are set in remans lol

 

I remember reading aswell the new cams are wider in some way, and requires an upgrade. Other option maybe to buy a Motor that's due for a rebuild and build it up on the side as time allows then when your done swap them over, I have seen some complete 870/871 for sale pretty cheaply needing a refresh, I know of one now you'd probably buy for a few grand, complete.

 

new cams will run around 2k unless im thinking of just rockers? a reman engine is over 30k lol Its cheap to find a small shop to rebuild. Dealers are a joke

 

Clean looking truck, paid off, I would put money in it.

 

Ok let's tackle a couple things here.

Rawzes engine is a cm871, yours will be (I believe) a cm570. There will be alot of differences so his videos can be used as reference but that's all.

For the cm870, 871, 2250 and 2350 you can buy a reman head or you can buy brand spanking new from the factory for $800 more. I do not know if they are still available for the 570 but I do know when I called my local cummins, they told me there are no new heads. I made her dig harder and she was shocked. I can't remember, part number ends in "rx" and if they put "nx" it will be the new one. For me there was a wait for the head but for the small amount of money, it is worth it.

The mechanic at peterbilt knows exactly what he is talking about. On my cm871 when I went to replace my one camshaft, there was a update. They widened the cam lobes to help with heat distribution but you need to buy new rockers for it as well. Most mechanics do not know this unless they've seen the TSB from cummins and will put the new cam on with the old rockers and never know there was a problem...... but there will be.

Cummins recon engines are sketchy at best.

As someone stated, I know many guys who have great luck with ipd cylinder kits rather than oem, I used fp diesel in my cat but have yet to know how well it will stand up.

Everything depends on how much you want to spend. If you like this truck and want to keep it and can finance anything then I suggest very very strongly that you go to rawze.Com and seek out Gearhead or Mr.Hagg and get one of them to do it, it will be the best investment you ever made.

If you want to save a bunch of money and do it yourself as cheaply as possible. Buy IPD cylinder kits and bring the head to a local diesel component rebuilder for remanning. Absolutely don't buy any of the cheaper eBay rebuild kits, you will regret it.

 

Keep in mind that Cummins wants to maximize profits. You would think they have your best interest in mind..... but they don't.

"Within spec" is the scariest term anyone can ever say to me! What is acceptable for cummins to reuse is sometimes pretty sketchy and you can bet that anything that is on the very lower edge of that spec still gets used because they sell you that engine for the sake price no matter how much parts they had to put into it, of course they'll try and profit more by doing less.

A reman head is not a new head, especially on a isx. And all recon engines come with reman heads, some with the wrong cams/ rockers. Some with measurements that may be within spec but to a good mechanic, they would call it a ticking time bomb.

I may be a little over the top, alot of people buy recon engines and they are great. I prefer not to bring my isx back to cummins spec, I prefer better then cummins spec because cummins spec is junk. Did you know that I cannot even order a rebuild kit for my engine without first tearing it apart? I need to measure my liners and check which connecting rods I have....... they literally don't even know. They dropped the ball so bad on the 2250's as well. They even have tsb out about mismatched cylinder packs in some engines so I'm sorry if i don't trust Thier workmanship.

I want my new motor to go longer than 5 year/ 1 million miles if possible. What I don't want is to drop a valve after 2 or 3 years.